I just modified mail-filter-out.sh like this: cat  mail-filter-out.sh   #!/bin/sh

  USER=$1   cat > /tmp/tempfile   cat /tmp/tempfile

cat  /tmp/tempfile This message is in MIME format.

--nsmail-7bjyg3nr5o-7bmibqhut9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: base64

PHA+Jm5ic3A7PC9wPjxwPiZuYnNwOzIxMjEyMTIxPC9wPjxwPiZuYnNwOzwv cD48cD4mbmJzcDs8L3A+PHA+Jm5ic3A7PC9wPjxwPiZuYnNwOzwvcD4tLS0t PGRpdiBpZD0iY3MyY19tYWlsX3NpZ2F0dXJlIj48L2Rpdj48cD48L3A+

--nsmail-7bjyg3nr5o-7bmibqhut9--

But the log appears:   Feb 08 19:14:18 lda(q1@a.com)<71012>

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Subject: dovecot Digest, Vol 202, Issue 11

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Today's Topics:

   1. Re: mail_filter plugin: failed: EOF without input (Gedalya)

Message: 1 Date: Fri, 7 Feb 2020 23:48:28 +0800 From: Gedalya

On 2/7/20 4:33 PM, ??? wrote: > > cat?mail-filter-out.sh > #!/bin/sh > cat > tempfile > cat ?mail-filter.sh > #!/bin/sh > > USER=$1 > cat > tempfile > > Some important Error logs? > Feb 07 15:49:19 lda(q1@a.com)<53648>

Your scripts are reading all the available input and not producing any output. This way the email message is lost.

You could add the line:

cat tempfile

or just replace "cat > tempfile" with "tee > tempfile"

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End of dovecot Digest, Vol 202, Issue 11